If it was me I would get a clean urine sample from a friend and sub. Due to the timeline you may be able to get a synthetic sample to sub at a headshop locally. Follow the substitution sticky on how to sub properly. Now since you failed they may want you to give an observed sample so that could be a problem with subbing.
Since you haven't smoked much I think if you follow the dilution sticky to the letter you would probably pass. If I was in your spot I would get a clean sample for subbing and jock it and I would also do the dilution method as a backup. If for some reason you have to be observed due to the failure you can still have a damn good chance with dilution.
The one thing that bothers me about your story is that they said you failed the rapid strip barely. I was under the impression from reading various websites that any faint line showing up is a negative. Now if it was sent out for confirmation you may be high enough to fail. Let us know how you do, good luck.
thepowerrulz Reviewed by thepowerrulz on . Failed One Drug Exam; Got 2 Take Another One; Do u guys know What to do? Whats up? Alright I applied for this job the other day and to my surprise they called me about 2 hours after I turned in the application. The interview went well and the managers liked me. But to my surprise I had to take a drug exam. The night before this, I took about 5 hits of a joint and the night before that I took about 5 hits. And before that I barely smoked. I only smoke every once in a while. I took the exam by urinating in one of those cups that give instant results by showing lines. Rating: 5